High Availability Overview

Revision as of 16:29, 13 December 2010

WARNING: This article is under construction. The information may not be exact.

This article will describe the TelcoBridges High Availability feature. The hardware and software are design with the following 2 goals in mind:

1. First and foremost, to recover from a system failure to minimize the system down time or instability as much as possible. This is achieve with a fault tolerant and redundancy architecture.
2. Secondly, to keep active calls open after a fail-over whenever possible.

TelcoBridges High Availability

TelcoBridges High Availability should be seen as a collection of high availability and redundancy features instead of one single feature. This means that customer can go as little or as far as they want to create a high availability system.

Definitions

Here is a list of terms used in the description of the high availability features:

• Active Calls
• Active/Standby
• Load Sharing
• Master/Slave
• Primary/Secondary
• Resynchronization
• Switchover
• Switchover Period
• Transient Calls

High Availability Features

Hardware High Availability Features

• Dual Power supply
  
• Networking
  • Control Network Redundancy
  • Dual VoIP Network
  • TMS Network
• Host redundancy
  
  • Hard Disks
• Tdm Interfaces (OC3/STM-1 APS)
• Clocking (Multiple clock sources)

TelcoBridges Hardware HA Product Checklist

This checklist provides a quick overview of each TelcoBridges product and their high availability hardware support

Products	Hardware High Availability Features
	Dual Power Supply	Control Network Redundancy	Dual Voip Network	Host Redundancy
TMG800	N	N	Y	N
TMG3200	Y (with 2 U)	N	Y	N
TMG5800	Y	N	Y	N
TMG7800	Y	Y	Y	Y
TMP800	N	N	N	Y
TMP5900	Y	Y	Y	N
TMP6400	Y (with 2 U)	Y	Y	Y
TMP7900	Y	Y	Y	Y
TMS1600	Y	Y	N/A	Y

Software Features

• CDR
• Configuration Database
• H.248
• Signaling Stack
  • CAS
  • ISDN
  • SIGTRAN
    • M2PA
    • M2UA
    • M3UA
  • SIP
  • SS7
    • ISUP
    • MTP2
    • MTP3
    • SCCP/TCAP
• Toolpack Application suites
  • gateway/user specific application
  • tboamapp
  • Tbtoolpack service
  • toolpack_engine
  • toolpack_sys_manager
  • tbstreamserver
  • web_server

Installation, Maintenance and Provisioning

This section will show how to install, upgrade and configure a high availability system.

First, we will look at the software installation and provisioning (Host redundancy).

• Installing a host redundancy system

• Upgrading a host redundancy system

• Configuring a host redundancy system